77626061 has 2 divisors, whose sum is σ = 77626062. Its totient is φ = 77626060.

The previous prime is 77626049. The next prime is 77626091. The reversal of 77626061 is 16062677.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64802500 + 12823561 = 8050^2 + 3581^2 .

It is an emirp because it is prime and its reverse (16062677) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77626061 - 2¹⁸ = 77363917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77626091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38813030 + 38813031.

It is an arithmetic number, because the mean of its divisors is an integer number (38813031).

Almost surely, 2^77626061 is an apocalyptic number.

It is an amenable number.

77626061 is a deficient number, since it is larger than the sum of its proper divisors (1).

77626061 is an equidigital number, since it uses as much as digits as its factorization.

77626061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 77626061 is about 8810.5653053592. The cubic root of 77626061 is about 426.5819905070.

The spelling of 77626061 in words is "seventy-seven million, six hundred twenty-six thousand, sixty-one".